The story
- Proto-Indo-European · derived from*terkʷ-“to spin; to turn”
- Proto-Germanic · derived from*þerh-
- Proto-Germanic · derived from*þweraną“to stir; to swirl; to turn”
- Proto-Germanic · derived from*þwerhaz“cross; adverse”
- Old Norse · derived fromþvert“across, athwart”
- Middle English · inherited fromathwert
- English todayathwart
From Late Middle English athwert, athirt, from a- (prefix meaning ‘in the direction of, toward’) + thwert (“crosswise; (cooking) across the grain”, adverb). Thwert is derived from thwert (“crosswise, transverse; counter, opposing; contrary, obstinate, stubborn”, adjective), borrowed from Old Norse þvert (“across, athwart”), originally the neuter form of þverr (“across, transverse”), from Proto-Germanic *þwerhaz (“cross; adverse”) (altered or influenced by Proto-Germanic *þweraną (“to stir; to swirl; to turn”)), from Proto-Germanic *þerh-, probably from Proto-Indo-European *terkʷ- (“to spin; to turn”). The English word is analysable as a- (prefix meaning ‘in the direction of, toward’) + thwart (“placed or situated across something else”). Cognates * Scots athort (“athwart”)
Words from the same roots
Proto-Germanic*þweraną all →
Proto-Indo-European*terkʷ- all →
Etymology from Wiktionary, CC BY-SA 4.0.